For one thing, series star Jonathan Groff -- known for his roles in "Frozen," "Glee," "Looking," "The Normal Heart" and a Tony Award-nominated role in "Spring Awakening" -- originally hails from Ronks in Lancaster County.

For another, the series -- which revolves around Groff's character, FBI agent Holden Ford, and his pioneering attempts to study the behavior of serial killers in the 1970s -- is shot largely in and around the Pittsburgh area.

Shooting in Pittsburgh meant finding local talent for extra roles and the occasional speaking line. And that's where Jonathan Roth comes in.

Roth owns the Barbizon acting and modeling locations in Pittsburgh and Harrisburg. And after helping the Netflix series find several actors in western Pennsylvania, Roth suggested they expand their search into the Harrisburg area.

"We have had, I think, 23 people on the first season," Roth said. "In the interim we've submitted quite a few people. We have more than that now, I don't know the exact number, from season two."

As the series is gearing up for season two, the search is on once again for walk-on roles and extras. The audition notice available on Facebook cites looking for people of "all types and ages," specifically noting a need for several African-American actors for a large historical march.

As the call went out again, Roth suggested that the producers extend their search to the Harrisburg area.

"[Netflix has] decided to come here, because they've used so many of our people," he said. "And we said absolutely, we'd love to have you. We are thrilled beyond belief."

Barbizon is an international franchise with about 250 locations, Roth said. He owns two of the four locations in Pennsylvania, with the other two located in Wilkes-Barre and Philadelphia.

And while auditions are also being held in western Pennsylvania and even expanding into West Virginia, Ohio and Indiana, there are plenty of people signed up to appear at the Lemoyne Barbizon location and try their luck.

Roth said that registration was closed at 800 people for Saturday's audition.

"We had to cap it out," he said. "We have private auditions for our people [who are represented by Barbizon], which are going to happen at 1 o'clock. Then at 3 o'clock it's open to the public."

Roth advised that attendees to the audition be prepared for the "hurry up and wait" aspect of show business.

"There will be obviously waiting," he said. "But we will be as efficient as we possibly can. We hated to cut it off [at 800 people], but we have to be realistic with the timeframe."

Roth said it was most likely that people seen at the audition will be considered for extra work, but he did assert that "we have had some speaking roles," and that sometimes casting needs are unclear until the 11th hour.

"There will be staff here from Netflix," he said. "So I think it depends on the need. I get phone calls and text messages at 9, 10 at night. Somebody was sick or canceled, so they say, 'can you help us for the next day of shooting?' and they'll need a specific type. So it just ranges."

With 800 people being seen in one day, Roth expects a long day -- and advises that attendees avail themselves to overflow parking at the nearby Raddison Hotel and shuttle service.

Will this mean more Netflix auditions in the future in the Harrisburg area? Roth said that this opportunity, "as in any business, is about relationships."

"[Netflix has] come, I think, four times and held private auditions for just our people [in Pittsburgh], and it's been really successful," he said. "And when I said, 'why don't you come out to Harrisburg?', they said, 'okay, you haven't let us down yet' or something to that effect. So we're thrilled. It's gonna be a busy day."